I'm very new to programming and have the following question:When using the set statement in properties we have to declare a variable outside the property which holds the data for the get statement. How can i make this variable not visible to other classes. In the example below i don't want other classes to be able to see "m_area, a and b" when an instance of Ellipse is created.
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Can someone give me a site to a tutorial that will help me write a program that will generate a pattern using do while, if else statements,and do until statements. I have been using google but I can't find anything. I need to generate patterns a certain size 6 by 6 or similar such as something like a checkerboard but where the ^ symbols is there a suppose to be a blank space..
View 3 RepliesWell I hope this is the right section since I can't figure out where to post for vb 2008 express. Anyway I'm trying to get my program to search for a html element and if it finds it, do something. I just started programming vb yesturday and have little programming knowledge. I'm learning as I go and thats how I learn.
Private Sub Connect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Connect.Click
WebBrowser1.Navigate(AdressBox.Text)
Dim Element As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName(tagName:="login")
' If (Element) Then
' End If
End Sub
I keep getting a null reference error no matter what combinations I try. I want it to search for the login name and if there is one then do the login procedure I have setup. I want to do this for a image later but I need to learn this first. I know that this tag name = login and is NOT a id.
I need to write a do until statement. 2 of them actually. 1st one records all of the income and then one that records all of the expense. Then they need to be add to figure a profit or a loss.
View 12 RepliesExplain what these do and how you would use them?
View 11 RepliesI have an export file containing the sql code to create and populate a table of a database. There is a way (using the visual studio 2008 using the data connection on the server explorer) to pass to the created table comething like this: [code]I have seen that this is possible only if i submit just one value like this:INSERT INTO province (id,codice_regione,codice,nome,sigla) VALUES(1, 1, 1, 'Torino', 'TO');But i would like to create all the record of the table running the sql script just one... i have a table of over 50000 record..
View 2 RepliesIncredibly newbish question, I know. Up to now, I've only made simple applications that do not require adding import statements
View 9 RepliesI want to write two nested loops and inside them "two if statements" when I write an Else statement which has a messagebox saying that ID is not found.. it repeated many times depending on the for loops. I only want to be displayed once !!! but when I wrote my code like this (using exit sub), the message appears when the condition is right and appears when the condition is wrong. I tried to move this statement somewhere else but still I have problems with it.
With EMPDataSet
For I = 0 To .Personal.Rows.Count - 1
For j = 0 To .Work.Rows.Count - 1
If EMP_CPR = .Personal.Rows(I).Item("CPR") Then
txtName.Text = .Personal.Rows(I).Item("Full_Name")
[Code] .....
I have a question about using nested IF statements in a SQL query. I have a select statement that calculates a semester grade -- Dim sqlStr As String = "SELECT 'XXX-XX-' + right(socSecNumber,4) As [Student SSN], Round((firstExam + secondExam +(2*finalExam))/4, 0) AS [Semester Average] FROM Grades that I am displaying the results in a datagridview. I can successfully display the masked social security number and the Semester Average but I also need to convert the Semester Average to a letter grade to display in a newly created column for Grade. Can this somehow be done with nested If or Case statements within the SQL statement or is there a way to pass the Semester Average information as a variable to a nested vb If statement? Basically, I am needing to know how to display the letter grade to the datagridview using this criteria:
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I am working on arrays but i need to do a sql update statement. Contents of the array are also part a primary key in my table.How do I do an update using the array for example if my array is room names and my other table values are start date, end date and campus ID.
View 5 Replieswhat exactly the difference between using cases and if statements are.
View 4 RepliesI have to deploy my VB.NET application developed in VB.NET and Visual Studio 2005. The customer is using SQL Server 2008, while the application is being built against SQL Server 2000.I received the following error against SQL Server 2008:An explicit value for identity column in 'Outgoing_Invoice' table can only be specified when column list is used and Identity Insert is ON.Here is my query for inserting data in two tables:
Dim cmd1 As New SqlCommand("Insert into Stock values(@invoice_no, @gate_pass, @exp_no, @clm_no, @category, @item_name, @weight, @units_case, 0, 0, @crtns_removed, @pieces_removed, 0, 0, @date_added, @date_removed, @inc_total_price, @out_total_price,[code]....
The error message is shows at cmd1.executenonquery. Both these tables Stock and Outgoing_Invoice have an identity column labelled serial before @invoice.The problem only arose when insert was tried on SQL Server 2008. When run against SQL Server 2000, it works as expected.What can be the possible reason for this issue and how can it be resolved?
I am just starting to learn the visual basic language so i am trying to make a simple application where a user can put in it's first and last name or else the application exists.
I manage to do this fine untill i get to the point of ending one if statement and starting another in the same button..
(in the form i have button1, button2, label1, label2. Button2 is only a "quit" button)
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
What happens when i run this is that i can put in the first name but then when i click yes the application closes.
I need to update more than one DataAdapters, so I used the
Dim sqlcmdbldUser As New OleDbCommandBuilder(dtaadpUser)
Dim sqlcmdbldPoints As New OleDbCommandBuilder(dtaadpPoints)
But only one of them works, the second one brings up errors if I try to update the DataAdapter. Is there a way of using and updating multiple data adapters?
There is not a VB.net database forum, and there is a HUGE difference (unfortunately) between ADO and ADO.net. I have a connection to a MS SQL database, which I understand is capable of handling multiple SQL statements in one Execution, ie
Using cmdExe As New System.Data.SqlClient.SqlCommand
sSQL = "Delete * from mytable where UniqueID=123;Insert into mytable (UniqueID, Field) values (123, 'something')"
.CommandText = strSingleSQLLine
[Code]....
There are two questions here actually...can I add the parameters before setting the command text, and do I have to add the same parameter over and over again?
how to associate a select case statement with, which point to four Function procedures, to four radio buttons that are used to +, -, *, and / two simple fractions in a fractions calculator. This is a class assignment for which I have already been graded. I used an If...ElseIf statment and it worked perfectly. Now I am trying to utilize the Case Statments with Function Procedures to do the same thing. I do not get graded for this, but I was told to research it an find an answer. My current code is listed below.
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I've recently ported my website from 2005 to 2008, and I'm using LINQ Queries to implement a search. The issue is that none of the fields are mandatory, so I've had to implement a dynamic LINQ Query (sic?). Here's the relevant code -
Public Function searchQuery(ByVal titleType As String, ByVal titleName As String, _
ByVal configMgr As String, ByVal lifecycle As String, _
ByVal CIType As String, ByVal recordsPerPage As String) As IEnumerable(Of
[code].....
I am working on Datagridview. My task is adding buttons in the Datagridview table based on the case statements. Like In the Present table i have one column called "CategoryDescription". In this column, values are like 3101,3102, 3103........Here 31 is the common. and like 3201,3202,3203......Here 32 is the common. Like there are so many common values are there. So where ever the common values will come there i have to add one button in the Same column.
So Finally my conclsion is at Satrting 3101 and starting 3201,3301,3401.. i have to add one button control 3101 and add button control on 3201 and add button control on 3301.
I am trying to figure out how to do this:
if (phrase = hello) then
"say hello"
if (phrase = how are you?) then
[CODE]...
So basically, I want it to work like a timeline. If I say hello, then it will respond and move onto the next if statement. Get it?
Here is the code I have now:
If phrase.Result.Text = "hello" Then
synth.Speak("Hello to you too")
If phrase.Result.Text.Contains("How are you") Then
[CODE]...
I'm using a series of nested if/then/else statements to make sure a user enters information into each text box or chooses a radio button. What would i use to say if no text is entered in textbox1, then ... also what would i use to make a sure the user choose one or the other radio button? for example i also have a combo box, i used "If SubjectComboBox.SelectedIndex <> -1" for the if statement.
View 2 RepliesIm creating a "Deal or no Deal" game , heres a pic of it so i can explain this abit better.
All images on the form are pictureboxes. The boxes in the middle are all named box_1, box_2, box_3 etc.
What my code is currently doing is , when i click a box it randomally selects an image from an imagelist. All images in the image list have all the amounts that are displayed on the main form. So if for example "€100,000" is revealed when i click box 1 i want the picturebox on the form labeled "€100,000" to hide.
This is the part that im having problems with. The first time i select a box the image will display and the matching figure will hide. And from then on it will display the images when i click the boxes but wont necessarily hide the correct image (matching the one thats in the picture box)
Really hope someone can spot a flaw somewhere , because its driving me nuts now. Here are box_1 and box_2 codes. And also the project is attached if you would rather have a look to see for yourself whats happening.
Private Sub box_1_MouseClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles box_1.MouseClick
MsgBox("Are you sure you want to choose this box ?", MsgBoxStyle.Information)
[Code].....
[code]I want to make the Properties Window to update the properties for X and Y at each MouseMove, so they become immediately visible for the user.
View 2 RepliesI'm making a control and I am trying to finalize my design time properties grid. I have several List(of Class) items as public properties and when I click on the design time menu (while testing the control) there is the word "Collection" and a button with an ellipsis (...) that brings up a neat pop up with the buttons Add/remove and all of the public properties of the collection's class on the right hand side. Basically for a non-collection instance of a class (with public properties) I'd like a similar button to show up. I know I could put all of the properties in the main control class and group them, but I like the pop up box feature. Anyway to duplicate this? (think font grid item etc.)
View 3 RepliesIn the form design I set up a TableLayoutPanel, 20x20 cells and in cell (1,1) a PictureBox (called Target) containing the image of a small target. The properties box for Target shows some very promising properties, Column and Row - and if you overwrite the values in the properties box, the PictureBox obligingly shifts to the corresponding cell position in th design. However in VB it is not possible to refer to Me.Target.Row or .Column - neither appears during coding in the menu of properties, and deliberately coding either of them produces an error like
Error 1 'row' is not a member of 'System.Windows.Forms.PictureBox'.
1. Why does the properties box show properties that cannot be altered programmatically?
2. How can my program move Target around in the TableLayoutPanel?
Is there a way to expose a UserControl's properties to the Properties Window in the Designer?
View 3 RepliesI'm working on a Hazardous Materials label printing program. One of the options is to do an "NFPA" label. Since there are 4 values required with 4 or 6 options, the ratings are entered via radio buttons in a group box. That's working okay. I display values in the NFPA diamond as they're entered: left quadrant blue, top quadrant red, left yellow, bottom red. I'm having trouble with the label in which the rating will be displayed on top of a jpg diamond for the white. In this quadrant the text can be up to 4 characters. I can accept the text going into an adjacent block a little, but the corners of the label overlap into another quadrant/color. I reduced the font size which solved the overlap problem but the font is then too small and looks terrible. I tried to make the background of the label transparent to let the color come through correctly but that's not a valid value for label.background. I'm figuring that the transparent background is the best solution. What can I use that will accept a transparent background so the color shows through?
I'm trying to set the transparent property via label properties properties, not via code. Here's the code if it makes any difference:
Public Class NFPA
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Close()
End Sub
[code]....
How to change all properties of a form to properties of other but don't change important properties like Owner,Handle, OwnedForms, Parent,HasChildren,Controls and ... .I have a child form that i want it to provide controls of Form.The background form provides Aero frame and child form is a transparent form in it.I want it because I want to draw buttons with system style in Aero in Windows Forms.This is my own code but it does not work good (ForeForm is child form):
For Each Propertry In ForeForm.GetType.GetProperties()
Select Case Propertry.Name
Case "AeroBackgroundEnabled", "FormBorderStyle", "TransparencyKey", "Parent", "Owner", "ShowInTaskbar", "Handle", "HasChildren", "OwnedFo[code].....
Additionaly:I wrote a great Aero Form.I don't publish current version (1.2) that supports Aero Blur,RealTime Aero Color change,extend Basic theme?
How to do this two combobox with properties
View 7 RepliesI have the need to read a several PDF file and save the information in a CSV or XML file.
The information is:How many pages are inside the PDF file
Page Size
File name
Title
Author
Subject
The PDF files are place in different folders under �d:PDF new � and after saving the information, most the folder be moved to �d:PDFold�
The process most run continues when a new folder at create or in every 30 sec.
How I do that?
My platform:
Windows XP pro
Adobe 8 pro + SDK
Attempting to follow instruction page 51. I have clicked form1 and clicked Alphabetical and Text is highlighted. The properties window is in Alfa order and the btotom reads "The text associated with the control". Instructions indicate modify the properties and table4-1 shows what should be modified. HOWEVER this data does not appear! How do I call this sata to modify. Soory for being a dunny. Trying to learn Visual basic 2008.
View 3 Replies